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- W2146788483 abstract "A study was carried out on single round jet ground effect lift loss. The jet exit Mach number and velocity were 0.71 and 240 m/s, respectively. The effects of ground height, baffle plate edge, and jet exit turbulent intensity were assessed, and Navier-Stokes equations were solved using computational fluid dynamics. Turbulence closure was achieved using a k-e model, and the result compared with calculations obtained with a differential stress model. Three baffle plate edges were tested (rounded, squared, and chamfered), and the ground heights varied from rj = 0.15 to 0.8. It was found that flow mechanisms varied significantly with ground heights. A coherent vortex existed between the baffle plate and the ground at the low ground heights (17 0.25), the vortex disappeared and separation at the plate edge played an important part in determining the lift loss. The baffle plate edge was found to account for as much as 14% of the ground effect lift loss. The stress model was found to improve the accuracy of the prediction." @default.
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- W2146788483 date "1994-03-01" @default.
- W2146788483 modified "2023-09-27" @default.
- W2146788483 title "Computational analysis of a single jet impingement ground effect lift loss" @default.
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- W2146788483 doi "https://doi.org/10.2514/3.46482" @default.
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